Water-recycled Cassava Bioethanol Production Integrated with Two-stage UASB Treatment

›› 2010, Vol. 18 ›› Issue (5): 837-842.

• BIOTECHNOLOGY AND BIOENGINEERING • Previous Articles Next Articles

Water-recycled Cassava Bioethanol Production Integrated with Two-stage UASB Treatment

SUN Fubao, MAO Zhonggui, ZHANG Jianhua, ZHANG Hongjian, TANG Lei, ZHANG Chengming, ZHANG Jing, ZHAI Fangfang

1. Key Laboratory of Industrial Biotechnology, Ministry of Education, Wuxi 214122, China;
2. Fermentation and Ecological Engineering Laboratory (FEEL), School of Biotechnology, Jiangnan University, Wuxi 214122, China

Received:2010-03-31 Revised:2010-06-22 Online:2010-10-28 Published:2010-10-28
Supported by:
Supported by the National High Technology Research and Development Program of China (2008AA10Z338);the National Natural Science Foundation of China (20906041)

Water-recycled Cassava Bioethanol Production Integrated with Two-stage UASB Treatment

孙付保, 毛忠贵, 张建华, 张宏建, 唐蕾, 张成明, 张静, 翟芳芳

1. Key Laboratory of Industrial Biotechnology, Ministry of Education, Wuxi 214122, China;
2. Fermentation and Ecological Engineering Laboratory (FEEL), School of Biotechnology, Jiangnan University, Wuxi 214122, China

通讯作者: MAO Zhonggui,E-mail:feelingmao@jiangnan.edu.cn
基金资助:
Supported by the National High Technology Research and Development Program of China (2008AA10Z338);the National Natural Science Foundation of China (20906041)

Abstract

Abstract: Considering limited success in target-hitting discharge from alcohol industry, our attention was directed toward a recycling use of distillery spentwash (DS) in cassava bioethanol production by using a two-stage up-flow anaerobic sludge blanket bioremediation (TS-UASBB). With the TS-UASBB,SO₄^-2, COD, N and P in the effluent from the DS degraded significantly and their concentrations were kept at 0.2 g·L^-1, 2.0 g·L^-1, 1.0 g·L^-1 and 15 mg·L^-1, respectively, in 13 batch processes for water-recycled ethanol fermentation. With the effluent used directly as dilution water, no heat-resistant bacteria were found alive. The thirteen-batch ethanol production individually achieved 10% after 48 h fermentation. The starch utilization ratio and total sugar consumption were 90% and 99.5%, respectively. The novel water-recycled bioethanol production process with ethanol fermentation and TS-UASBB has a considerable potential in other starchy and cellulosic ethanol production.

Key words: cassava, bioethanol production, thermophilic and mesophilic, up-flow anaerobic sludge blanket, distillery spentwash, recycle and reuse

摘要： Considering limited success in target-hitting discharge from alcohol industry, our attention was directed toward a recycling use of distillery spentwash (DS) in cassava bioethanol production by using a two-stage up-flow anaerobic sludge blanket bioremediation (TS-UASBB). With the TS-UASBB,SO₄^-2, COD, N and P in the effluent from the DS degraded significantly and their concentrations were kept at 0.2 g·L^-1, 2.0 g·L^-1, 1.0 g·L^-1 and 15 mg·L^-1, respectively, in 13 batch processes for water-recycled ethanol fermentation. With the effluent used directly as dilution water, no heat-resistant bacteria were found alive. The thirteen-batch ethanol production individually achieved 10% after 48 h fermentation. The starch utilization ratio and total sugar consumption were 90% and 99.5%, respectively. The novel water-recycled bioethanol production process with ethanol fermentation and TS-UASBB has a considerable potential in other starchy and cellulosic ethanol production.

关键词: cassava, bioethanol production, thermophilic and mesophilic, up-flow anaerobic sludge blanket, distillery spentwash, recycle and reuse

SUN Fubao, MAO Zhonggui, ZHANG Jianhua, ZHANG Hongjian, TANG Lei, ZHANG Chengming, ZHANG Jing, ZHAI Fangfang. Water-recycled Cassava Bioethanol Production Integrated with Two-stage UASB Treatment[J]. , 2010, 18(5): 837-842.

孙付保, 毛忠贵, 张建华, 张宏建, 唐蕾, 张成明, 张静, 翟芳芳. Water-recycled Cassava Bioethanol Production Integrated with Two-stage UASB Treatment[J]. , 2010, 18(5): 837-842.

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[3]	Huixing Li, Ruijing Zhang, Lei Tang, Jianhua Zhang, Zhonggui Mao. Manganese peroxidase production from cassava residue by Phanerochaete chrysosporium in solid state fermentation and its decolorization of indigo carmine [J]. Chin.J.Chem.Eng., 2015, 23(1): 227-233.
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[5]	HAOXiaolong,ZHOUMinghua, YUHanqing,SHENQinqin, LeiLecheng. Effect of Sodium Ion Concentration on Hydrogen Production from Sucrose by Anaerobic Hydrogen-producing Granular Sludge [J]. , 2006, 14(4): 511-517.

Water-recycled Cassava Bioethanol Production Integrated with Two-stage UASB Treatment

Water-recycled Cassava Bioethanol Production Integrated with Two-stage UASB Treatment

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